package com.lewis.system.monitor;

import com.lewis.core.base.domain.BaseResult;
import com.lewis.core.utils.StringUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.connection.RedisServerCommands;
import org.springframework.data.redis.core.RedisCallback;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.*;

/**
 * 缓存监控
 *
 * @author Lewis
 */
@RestController
@RequestMapping("/monitor/cache")
public class CacheController {

    @Autowired
    private RedisTemplate<String, String> redisTemplate;

    @GetMapping()
    public BaseResult getInfo() {

        Properties info = (Properties) redisTemplate.execute((RedisCallback<Object>) RedisServerCommands::info);
        Properties commandStats = (Properties) redisTemplate.execute((RedisCallback<Object>) connection -> connection.info("commandstats"));
        Object dbSize = redisTemplate.execute((RedisCallback<Object>) RedisServerCommands::dbSize);

        Map<String, Object> result = new HashMap<>(3);
        result.put("info" , info);
        result.put("dbSize" , dbSize);

        List<Map<String, String>> pieList = new ArrayList<>();
        Objects.requireNonNull(commandStats).stringPropertyNames().forEach(key -> {
            Map<String, String> data = new HashMap<>(2);
            String property = commandStats.getProperty(key);
            data.put("name" , StringUtil.removeStart(key, "cmdstat_"));
            data.put("value" , StringUtil.substringBetween(property, "calls=" , ",usec"));
            pieList.add(data);
        });
        result.put("commandStats" , pieList);
        return BaseResult.ok().setData(result);
    }
}
